APA (7th ed.) Citation

Duellman, W. E. (2015). Marsupial frogs: Gastrotheca & allied Genera. Johns Hopkins University Press.

Chicago Style (17th ed.) Citation

Duellman, William E. Marsupial Frogs: Gastrotheca & Allied Genera. Baltimore: Johns Hopkins University Press, 2015.

MLA (9th ed.) Citation

Duellman, William E. Marsupial Frogs: Gastrotheca & Allied Genera. Johns Hopkins University Press, 2015.